Add
8 + 13
21
-7 -4
-11
The submarine is cruising at 40 m below sea level. The submarine ascends 18 m. Write a numerical expression and find the submarine's new location?
-40+18
-22m
7- 12
-5
TRUE OR FALSE
For ADDITION, If signs are the SAME you keep the signs and add
True
- 9 + ( -5)
-14
8 -2
6
The top of the Sears Tower in Chicago, is 1454 feet above street level, while the lowest level is 43 feet below street level. Write an expression to find the distance from the lowest level to the top? Find the distance.
1454-(-43)
1454+43
1497ft
- 8 - (-10)
-8 + 10
2
For addition, What do you do If the signs are DIFFERENT?
• If signs are DIFFERENT you Subtract and take the sign of the larger number
43 + 31
74
-5 - (-3)
-5 + 3
-2
The distance from the high dive to the swimming pool is 10 feet. The pool is 12 feet deep. What is the total distance from the high dive to the bottom of the pool? Remember to write an expression
10-(-12)
10+12
22 ft
-8 + 13 - (-17)
- 8 + 13 + 17
-8 + 30
22
True or False
For Subtraction, IF both numbers are negative, you keep the sign and add them. -5 -4= -9
True
-7 + 9 + (-4)
-11 + 9
-2
10 + (-5) -17 - (-12) -4
10 - 5 -17+ 12 -4
22 -26
-4
The temperature in Mr. Marlow's Freezer is 20F the temperature in Mrs. Simmerly's Freezer is -5F. What is the difference between the two temperatures?
20 - (- 5)
20 + 5
25 F
10 + (-5) -17 - (-12) - 4
10 - 5 - 17 + 12 -4
22-26
-4
For subtraction, What do you do if both signs are Different signs?
9 -10
subtract and take the sign of the larger number
34 + (-12) + (-16) + 2
36 + -28
8
15 - x -y for x= -7 and y=4
15 - (-7)- 4
15+ 7 -4
22 - 4
18
During a possession in a Shoreman football game, the team gain 22 yards, lost 14 yards, gained 4, gained 20 yards, and lost 8 yards. Write an expression and determine the number of yards they had lost or gained?
22 + (-14) + 4 + 20 + (-8)
46 + (- 22)
24 yard line
- 8 - (-16) + 8 -4
- 8 + 16 + 8 - 4
24 - 12
12
What do you do when there are two negatives with NO number to separate them?
8-(-5)
change to a positive!
8+5= 13